Shielded plug and socket member



Aug.1s-, 1939. s; MfDEL cAMP' 2,199,961

- SHIELDEDY PLUG AND SOCKET MEMBER Filed oct. 51, 1936 e5 sa -Invenom Suptbra/QMBeZ/'am gy Jud JW Patented Aug. 15,1939

N UNITI-:o Is'vrlifvrlas lawait 2,169,961 snmmsn PLUG ANn'socxE'r MEMBER.

` Scipione M. Del Camp, 'Maywood lll., to vCinch Manufacturing Erporation,

assignor Chiem.

Ill., a corporation of lllin Application October 3l, 1986,*Berial No. 108,613

t claims. v(ci. irse-332) My invention relates to improved plug and socket members which are shielded against external electrical disturbances.

In the drawing, which .represents a preferred 5 embodiment of my invention:

l isa side elevation showing my improved plug and sockeumembers in connected relation;

Fig. 2 is a top plan view of the device shown in 1o Fis. 1:

Fig. 3 is a bottom plan view of the device shown in Fig. l;

Fig. y4 is an enlarged section taken along the line 6 8 of Fig. l;

Fig. 5 is a bottom plan view of the base assembly of my improvedsocket member;

Fig. 6 is a bottom plan view of the shield part ofmy socket member;

Fig. l is a section taken along the line 'l-l oil me. t: 5

Fig. 8 is a plan view of the plug member of my connection;

Figui! is a plan View of the shield part of my plug member; and g5 Fig. 10 is a section takenv along the line it-l@ oi' Fig. 9.

Referring in detail. to the drawing, the socket member of my invention as illustrated comprises a relatively deeply hollowed metal cup-shaped shield i which may be cylindrical or of lany other suitable shape. The cup i has an open end and an aperture A#at the other end to allow the entrance of a 'wire or group of wires into the shield i. A heck portion 3, having a longitudinal open- 35 ing, may be secured to the cup i with its longitudinal opening in alignment with the aperture 2.

The neck 8 is preferably of suillcient length to permit a metallic shield (not shown), or other form oi' cover for insulated wire, to be drawn over or into and permanently electrically secured to the cup i. This is one way my device may be grounded. Fiber linings 5 may be disposed around the interior of the cup i so as to insulate parts oi the device disposed within the cup from the walls of the cup.` A socket base assembly carrying contact terminals is securedto the open end of the cup i `in a manner which will be hereinafter described.

The socket base assembly, as most clearly illustrated in Figs. 4 and 7, comprises a plurality oi' plates secured together and contact terminals carried by'one or more of the insulating plates of the assembly. My preferred form. of base assembly includes a metal plate t, 'an insulating 55 plate 'l oi substantially the same diameter as the plate disposed on oneside oi the plate. and an insulating plate B of lesser diameter on the other side. A pair of insulating plates 9 and lil, having a greater diameter than the, plate 8 but less than the plate 6, are provided on the opposite side of the insulating plate l from the metal plate 6.- The several plates are preferably connected together by .a rivet means Il, as most clearly shown itx-Figui. Socket contact terminals i2 are carried by the base assembly and 10 each terminal is iirmly secured to the same in my preferred device by reason of a flange portion i3 (Fig. 4) disposed between the plates 9 and Ill when the plates are in assembled relation. Each oi the plates 6, l, 8 and t have apertures Ill in l5 alignment with the prong-receiving portion oi the contact terminals i2 to allow entrance of the prongs of the cooperating plug member into the contact terminals. The prong-receiving aperture of the metal plate t has a relatively large diameter preventing the plug prongs from contacting the material of the plate t during entrance into the socket terminals. The metal plate 6 has a. plurality of apertures it adapted to receive attaching means in electrical contact with the cup 125 l of the .cooperating plug member, the apertures it being of such minimum diameter that the attaching means engage the walls surrounding the apertures providing electrical contact between the cup of the plug member and the plate 3o S. Apertures it are formed in the insulating plate l to allow entrance of the attaching means of the plug member into the apertures l5 oi' the metal plate. The insulating plates 9 and it may beV notched as at IS (Fig. 7) to allowthe attaching 35 means of the plug member to entirely through the base assembly oi the socket, as most clearly shown in Fig. 4. The base assembly of the socket is attached to the cup i through means of ear-shaped portions l? (Figs. t and 6) formed 40 adjacent the open end of the cup i Aand crimped over the. insulating plete 9, as most clearly shown in Fig. 4..' It is important to notice that the insulating plate 8 spaces the plate t a proper distance from the plate t to allow the lugs il to engage the plate t when they are in clamped rela.- tion with the plate t for the purpose of attaching the base assembly to the cup. As a result oi this construction the plate 6 is in positive electrical contact with the cup i when the ofthe socket member are in final assembly.- A lug,r I8, integral with the material adjacent the .open end of the cup i, extends into a notch I9 provided in the peripheral edge of the plates 6 and l for'the 55 members normally insulated from said contact terminals, said fastener members having one end vsecuredl to the bottom of said cup and thefree end extending through said insulating plate to a position beyond the same, said free end having yieldable fastener means adapted to enter and engage the material surrounding the aperture of a -metal plate, which plate is in electrical en-` gagement with the shield cup of another member of said plug and socket connection.

SCIPIONE M. DEL CAMP. 

